... density, water absorption, apparent porosity, uniaxial compressive and tensile strength tests were performed to obtain data set for correlation analysis. With water saturation under atmospheric pressure, the uniaxial compressive strength and tensile strength of all studied lithotypes were reduced...

... porosity, water absorption at atmospheric pressure, resistance to salt crystallization, rupture energy, compressive strength, flexural strength, abrasion resistance and slip resistance. The achieved results remain into the expected ones for this kind of stone. Nevertheless, small differences were found...

... stress (C cd ) levels, the static elastic modulus (E s ), as well as the basic physical and dynamical properties, such as the dry density (γ d ), the effective porosity (n eff ) and the ultrasonic velocities of both primary (V P ) and secondary (VS) waves. Results obtained from the mechanical tests...

... Abstract In this research, the variation of thermal conductivity with temperature of a limestone and its relationship with porosity is studied. Samples from Prada formation, a lower Cretaceous limestone from the Catalan Pyrenees (Spain), obtained from the Tres Ponts road tunnel were subjected...

... dependence k(s) is determined and approximated by the two-parameter exponential function. Under fixed σ m the cell was pumped out and connected with a reservoir filled with known quantity of air. By the settled equilibrium pressure in the cell-reservoir system, the porosity φ m is calculated. The tests...

... measured, including porosity, permeability, and elastic wave velocity. Mechanical characterization was then performed using a combination of uniaxial, tensile, and triaxial experiments on as-collected samples and samples thermally stressed in the laboratory. The obtained results reveal MEGT to have a high...

... in air. The Region II in glass is controlled by the mass-transport to the crack tip. In the case of rock, the transport of water to crack tip is important. In general, Region II is not observed for subcritical crack growth in rock materials, because rocks contain water. Since the porosity of Carrara...

... porosity, density and penetration rate. For prediction of UCS, artificial neural networks were developed between UCS and input data resulting a practical correlation. In this research, a long well segment possessing complete and continuous data coverage has been analysed, and collected data of the wellbore...

... performed on Malm limestones and dolomites. The rock samples were characterized by uniaxial compressive strength (UCS), tensile strength, Young's Modulus, Poisson's ratio, bulk density, porosity and ultrasonic p- and s-wave velocities. Additionally water-permeability was measured in a triaxial cell under...

... presented for completeness. The response of a Representative Elementary Volume (REV) to external mechanical loading is modeled using finite element numerical simulation in order to conclude the effective mechanical properties and compare them with the results of analytical calculations. The porosity...

... important role in a precise forecast of rock behaviour under such inconsistent conditions. The mechanical properties of rocks change with density, porosity, variation of mineral assemblage, grain size, texture and effective pressures acting on them. Changes in physico-mechanical properties in metamorphic...

... was determined. Hg porosity and total porosity of untempered and tempered specimens were found, too. As model material was chosen so-called Silesian granite from Nový lom quarry (Žulová pluton, Czech Republic), which has been previously tested, and over macroscopically homogeneous character the variances...

... property porosity compressive strength pillar wall uniaxial compressive strength pillar Wellbore Design mechanics strength water content chalk recrystallization dissolution Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group...

.... reservoir geomechanics backfilled stope compaction coefficient Upstream Oil & Gas earth pressure porosity Reservoir Characterization stope backfill material horizontal stress metals & mining Engineering cohesion water pressure backfill slump analytical solution permeability fill...

...-variable function by a single variable one, P eff (P c , P p ), according to the effective pressure law: (equation)(1) Fluid Dynamics scco 2 specimen Upstream Oil & Gas pressure condition sandstone MPa flow in porous media pore pressure porosity effective pressure law interaction...

... ABSTRACT: Basaltic rocks display a wide range of porosity depending on size of vesicles as a result of their complex genesis. Predicting of strength of rock material have crucial importance for design of engineering structures such as dams, foundations, tunnels, and other engineering projects...

... ABSTRACT: The permeability for two types of sandstone, Berea sandstone and sandstone from Otway Paaratte formation, under different confining pressure are measured and porosity is investigated 3D micro-focus X-ray CT and 3D medial axis analysis. The permeability is determined using flow pump...

... Wellbore Design strength Artificial Intelligence classification reservoir geomechanics Upstream Oil & Gas Geol Turkey monogram Material Behaviour study area porosity mechanical property rock material plagioclase granodiorite rock granitic rock Environ wellbore integrity engineering...

... al. 2008). Natural stones are one of those materials with high prefer ability due to their decorative view. A review of earlier investigations reveals that rock type, porosity, P-wave velocity and moisture content have the most effective factors on the thermal conductivity of rocks (Incropera...

... flow in porous media node porosity hydraulic fracturing Rock mechanics Artificial Intelligence Upstream Oil & Gas triaxial compression deformation Shirahama sandstone permeability evolution evolution asahina modeling permeability evolution Modeling & Simulation Fluid...